Writing-tablet



(No Model.) 2 sneetssheet '1.-

I. D. CADYY.. WRITING TABLET.

No. 484,406. Patented 0Ct..18',l892.

(.No Model.) 42 Sheets-Sheet 2.

F. D. 0,ADY.

WRITING TABLET.

No. 484,406. Patented Oct. 18, 1892.

NVENTOH.' r 9. W

UNITED STATES PATENT CEEICE.

FRANCIS D. CADY, OF WATERBURY, CONNECTICUT.

WRITING-TAB LET.

SPECIFICATION forming part 0f Letters Patent N0. 484,406, dated October18, 1892.

Application filed March 2, 1892.

To all whom it may concern.:

Be it known that I, FRANCIS D. CADY, a citizen of the United States,residing at Waterbury, in the county of New Haven and State ofConnecticut, have invented certain new and usefulImprovements inWriting-Tablets; and I do hereby declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

This invention relates to certain novel and useful improvements inWriting-tablets, but more particularly to that class of tablets in whichis contained a roll of paper passing over the Writing-surface andadapted as fast as used to be moved along and disposed ot' in suchmanner as to present a fresh surface to be written upon. Devices of thischaracter are particularly intended either for merchants for keepingaccount of current sales and the like or for the purposes to which adiary or daily record is usually put.

My invention consists in the construction and combination of elementshereinafter fully explained, and then recited in the claims.

In order that those skilled in the art to which my invention appertainsmay fully understand its construction, I will describe the same indetail, reference being had to the accompanying drawings, which form apart of this specification, and in which- Figure lis a plan view; Fig.2, a plan view with the lid and paper-support removed and the paper tornin two and its ends rolled back to show the interior construction; Fig.3, a central vertical longitudinal section; Fig. 4E, a sectionalelevation on the line 'y y of Fig. 2; Fig. 5, a detail side elevat-ionof the slide and its pawl in one position, and Fig. 6 a similar view ofthe same parts in another position.

The same numerals denote the same parts in each of the figures.

A rectangular box l serves to contain the moving parts of my device.Fitting within this box is a frame consisting of two side pieces 2 and3,the whole frame being slightly narrower than the interior width of thebox, so as to leave a space 4. at one side. The

sides of the frame are secured together by one A or more cross-bars 5.Journaled between the sides of the frame, as seen at Fig. 2, are twopaper-carrying rollers 6 and 7, the latter hav- Serial No. 423,517. (Nomodel.)

ling its shaft extended outward through the box at one side and providedwith a key-seat for the application of a key 8. Near its ends the framehas journaled therein other rollers 9, over which the paper passes, asseen at Fig. 3, and upon the top of the frame is laid a square of tin orother relatively-thin and somewhat-stiff material, which is denoted by10, and over which the paper, which I designate by a, passes between therollers 9.

11 is a hinged lid, provided with a catch 12 for locking it in itsclosed position.

Referring now more particularly to Fig. 4., the sides 3 of the framehave j ournaled therein two sprocket-wheels 13 and 14., over which and asupport 15 runsl a sprocket-chain 16. Immediately above the support theshaft of the roller 6 is projected into the vertical plane of this chainand is provided with a toothed wheel 17, engaging the links of saidchain and adapted to be driven thereby. Near. its edge the lid or cover11 is provided with a slotted plate 18 immediately over the chain, andin this slot is arranged a slide 19, having a suitable handle or knoband provided with a pivoted pawl 20, whose tooth engages the chain. Thistooth,as shown in the drawings, has one vertical face and one obliqueface, so that when moved in one direction it will carry the chain withit, and when moved in the other direction it will ride upon and slideover the links of the chain without imparting any movement thereto.

The operation of my invention is as follows: When the parts are in theposition shown at Fig. 1, the length of the paper between the rollers 9lies upon the smooth writing surface or tablet 10 and is visible throughthe opening in the lid or cover, and it may therefore be written uponuntil the blank space is lled.

The slide 19 by means of its knob is then moved along the slotted platein the direction of the arrow on Fig. l, and this movement of the slidethrough the sprocket-chain revolves the wheel 17 on the roller 6, andthereby causes the latter to wind upon itself the length of paper,taking it from the roller 7 and moving the length of paper along in suchmanner as to present a fresh unwritten portion upon the tablet. Thereturn movement of the slide causes no movement of the paper, since thepawl slips over the surface of the IOO sprocket-chain toward theposition in which it is shown at Fig. 1.

i For the purpose of securing the ends ofthe length of paper each of therollers and 7 is provided with some kind of a clip or fastening device,which I have thought it unnecessary to show.

Whenever it is desired to read the Written matter upon the strip ofpaper, the pawl 20 is,

` two paper-carrying rollers, one provlded Wlth raised upon its hinge,so as to be out of' engagement with the chain, and the paper may then beWound from the roller 6 to theroller 7 by means of the key 8, and whenthus Wound and that portion of the written matter which appears on topof the machine has ybeen read the successive portions of the Writtenmatter may be in their turn exposed by the operation of the slide,r asheretofore explained.

I claim- 1. Ina machine of the character described,

the combination, with the inclosing case having a lid open at itscenter, `ot' the paper-carrying rollers, a tablet over which the paperpasses from one roller to the other, a sprocket- Wheel borne upon theaxis of one roller, a sprocket-chain arranged as described, and a `slidefor the actuationr of the sprocket-chain,

substantially as specied.

2. The combination, with the case, of the a sprocket-wheel, asprocket-chain running over suitable wheels*journaledl tothe side of theframe, and a slide provided with a pawl and engaging the sprocket-chain,the whole arranged substantially as specied.

In testimony whereof I aiix my signaturein presence of two: witnesses.

FRANCIS D. CADrY. Witnessesr CEAS. E. TURNER, GEO. BARNES.

